dorsal/arxiv
View SchemaInternal Motility in Stiffening Actin-Myosin Networks
| Authors | Joerg Uhde, Manfred Keller, Erich Sackmann, Andrea Parmeggiani, Erwin Frey |
|---|---|
| Categories | |
| ArXiv ID | physics/0307014 |
| URL | https://arxiv.org/abs/physics/0307014 |
| DOI | 10.1103/PhysRevLett.93.268101 |
| Journal | Phys. Rev. Lett. 93, 268101 (2004) |
Abstract
We present a study on filamentous actin solutions containing heavy meromyosin subfragments of myosin II motor molecules. We focus on the viscoelastic phase behavior and internal dynamics of such networks during ATP depletion. Upon simultaneously using micro-rheology and fluorescence microscopy as complementary experimental tools, we find a sol-gel transition accompanied by a sudden onset of directed filament motion. We interpret the sol-gel transition in terms of myosin II enzymology, and suggest a "zipping" mechanism to explain the filament motion in the vicinity of the sol-gel transition.
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"abstract": "We present a study on filamentous actin solutions containing heavy meromyosin\nsubfragments of myosin II motor molecules. We focus on the viscoelastic phase\nbehavior and internal dynamics of such networks during ATP depletion. Upon\nsimultaneously using micro-rheology and fluorescence microscopy as\ncomplementary experimental tools, we find a sol-gel transition accompanied by a\nsudden onset of directed filament motion. We interpret the sol-gel transition\nin terms of myosin II enzymology, and suggest a \"zipping\" mechanism to explain\nthe filament motion in the vicinity of the sol-gel transition.",
"arxiv_id": "physics/0307014",
"authors": [
"Joerg Uhde",
"Manfred Keller",
"Erich Sackmann",
"Andrea Parmeggiani",
"Erwin Frey"
],
"categories": [
"physics.bio-ph",
"cond-mat.soft",
"q-bio"
],
"doi": "10.1103/PhysRevLett.93.268101",
"journal_ref": "Phys. Rev. Lett. 93, 268101 (2004)",
"title": "Internal Motility in Stiffening Actin-Myosin Networks",
"url": "https://arxiv.org/abs/physics/0307014"
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